Browsing by Subject "Graphene"

Now showing items 1-20 of 127

    • 3Cat-1 project: a multi-payload CubeSat for scientific experiments and technology demonstrators 

      Jové Casulleras, Roger; Araguz López, Carles; Via Ortega, Pol; Solanellas Bofarull, Arnau; Amézaga Sarries, Adrià; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Marí Barceló, Marc; Olivé Muñiz, Roger; Sáez Hernández, Alberto; Jané Abad, Jaume; Bou Balust, Elisenda; Iannazzo Soteras, Mario Enrique; Gorreta Mariné, Sergio; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Domínguez Pumar, Manuel; Alarcón Cot, Eduardo José; Ramos Castro, Juan José; Camps Carmona, Adriano José (2017)
      Article
      Open Access
      This article introduces 3 Cat-1, the first project of the Technical University of Catalonia to build and launch a nano-satellite. Its main scope is to develop, construct, assemble, test and launch into a low Earth orbit a ...

    • A graphene based plasmonic antenna design for communication in the THz regime 

      Suessmeier, Christoph; Schaeffer, Stephan; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Stock, Daniel; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference lecture
      Restricted access - publisher's policy
      We show the first THz emission of a graphene based plasmonic antenna structure. Furthermore we present the minimum material requirements for an operational graphene antenna in terms of chemical potential µc and relaxation time t.

    • Adhesion and friction control localized folding in supported graphene 

      Zhang, Kuan; Arroyo Balaguer, Marino (American Institute of Physics (AIP), 2013-05)
      Article
      Restricted access - publisher's policy
      Graphene deposited on planar surfaces often exhibits sharp and localized folds delimiting seemingly planar regions, as a result of compressive stresses transmitted by the substrate. Such folds alter the electronic and ...

    • An atomistic-based foliation model for multilayer graphene materials and nanotubes 

      Ghosh, Susanta; Arroyo Balaguer, Marino (2013-01)
      Article
      Open Access
      We present a three-dimensional continuum model for layered crystalline materials made out of weakly interacting two-dimensional crystalline sheets. We specialize the model to multilayer graphene materials, including ...

    • Analysis of a plasmonic graphene antenna for microelectronic applications 

      Suessrneier, C.; Thiel, F.; Wigger, Anna K.; Bolívar, Peter Haring; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Cabcllos Aparicio, A.; Banszcrus, L.; Stampfer, C.; Lemme, M. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Graphene offers a large potential to downscale antennas to the micrometer scale, due to its special dispersion relation and its ability to support plasmons in the THz frequency range. For an adequate performance of the ...

    • Análisis estructural de óxidos de grafeno (GO) y óxidos de grafeno reducidos (rGO) 

      Colom Fajula, Xavier; Cañavate Ávila, Francisco Javier; Lis Arias, Manuel José; Sanjuan, Gemma; Gil Galí, Ignacio (2020-07-01)
      Article
      Open Access
      El artículo caracteriza a nivel estructural, morfológico y térmico tres muestras distintas de óxido de grafeno comerciales (AGO, EGO y CGO) obtenidas mediante el método Hummers, las cuales han sido posteriormente reducidas ...

    • Area and laser power scalability analysis in photonic networks-on-chip 

      Abadal Cavallé, Sergi; Cabellos Aparicio, Alberto; Lázaro Villa, José Antonio; Nemirovsky, Mario; Alarcón Cot, Eduardo José; Solé Pareta, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference lecture
      Restricted access - publisher's policy
      In the last decade, the field of microprocessor architecture has seen the rise of multicore processors, which consist of the interconnection of a set of independent processing units or cores in the same chip. As the number ...

    • Bridging NiCo layered double hydroxides and Ni3S2 for bifunctional electrocatalysts: the role of vertical graphene 

      Xiao, Zhang; Fan, Jiajun; Lu, Xunyu; Han, Zhaojun; Cazorla Silva, Claudio; Hu, Long; Wu, Tom; Chu, Dewei (2021-07-01)
      Article
      Restricted access - publisher's policy
      In this work, we report a bifunctional electrocatalyst with nickel sulphide (Ni3S2) as the template, vertical graphene (VG) as the bridging material, and nickel–cobalt layered double hydroxides (NiCo LDHs) nanosheets as ...

    • Caracterització optoelectrònica del grafè sobre diferents substrats a altes freqüències 

      Gabriel Cortés, Daniel (Universitat Politècnica de Catalunya, 2014-09-09)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] This project presents a study for both optic and electronic properties of graphene and possible variations of different physical magnitudes that are produced in a material when a single layer of graphene is deposited ...

    • Characterization and implementation of resistance-to-time-to-digital readout system for novel photoresistor based on graphene 

      García Gutiérrez, Mario Marcos (Universitat Politècnica de Catalunya, 2017-09-07)
      Master thesis
      Restricted access - confidentiality agreement

    • Characterization of the methane–graphene hydrophobic interaction in aqueous solution from ab initio simulations 

      Calero Borrallo, Carles; Martí Rabassa, Jordi; Guàrdia Manuel, Elvira; Masia, Marco (2013-09-17)
      Article
      Restricted access - publisher's policy
      In this article, the interaction between a methane molecule and a graphene plane in liquid water has been characterized employing DFT-based free energy Molecular Dynamics calculations. This system represents a good model ...

    • Chondroinductive alginate-based hydrogels having graphene oxide for 3D printed scaffold fabrication 

      Olate Moya, Felipe; Mateos Timoneda, Miguel Ángel; Engel López, Elisabeth; Arens, Lukas; Wilhelm, Manfred; Palza, Humberto (2020-01-07)
      Article
      Open Access
      Scaffolds based on bioconjugated hydrogels are attractive for tissue engineering because they can partly mimic human tissue characteristics. For example, they can further increase their bioactivity with cells. However, ...

    • Coexistence of wrinkles and blisters in supported graphene 

      Zang, Kuan; Arroyo Balaguer, Marino (Elsevier, 2017-07-01)
      Article
      Open Access
      Blisters induced by gas trapped in the interstitial space between supported graphene and the substrate are commonly observed. These blisters are often quasi-spherical with a circular rim, but polygonal blisters are also ...

    • Colloidal Quantum Dot Tandem Solar Cells Using CVD Graphene as An Atomically Thin Intermediate Recombination Layer 

      Bi, Yu; Pradhan, Santanu; Akgul, Mehmet Zafer; Gupta, Shuchi; Stavrinadis, Alexandros; Wang, Jianjun; Konstantatos, Gerasimos (ACS, 2018-06-28)
      Article
      Open Access
      Two-terminal tandem cell architectures are believed to be an effective way to further improve the power conversion efficiency in solution processed photovoltaics. To design an efficient tandem solar cell, two key issues ...

    • Competing Ultrafast Energy Relaxation Pathways in Photoexcited Graphene 

      Jensen, S. A.; Mics, Z.; Ivanov, I.; Varol, H. S.; Turchinovich, D.; Bonn, M.; Tielrooij, K. J. (ACS Publications, 2014-09-23)
      Article
      Open Access

    • Construction of free-standing films using graphene for biomedical applications 

      Biurrun Zuasti, Maialen (Universitat Politècnica de Catalunya / Zhejiang University, 2011)
      Master thesis
      Restricted access - author's decision
      The LbL Electrostatic Self Assembly could be used to produce nano or micrometric thickness multilayer films with several different functionalities and applications. It is based on the alternative dipping of a substrate in ...

    • Contactless electrical resistance of 2D materials using a rutile resonator 

      Arcos Gutiérrez, David; Krkotic, Patrick; O'Callaghan Castellà, Juan Manuel; Pont, Montse; Ametller Congost, Lluís; Ferrer Anglada, Núria (2019-12-12)
      Article
      Open Access
      Measuring the electrical surface resistance of 2D materials without contact can provide a method for obtaining their intrinsic characterisation. The aim of this paper is to show that a rutile dielectric resonator (RDR) can ...

    • Controlling mid-infrared plasmons in graphene nanostructures through post-fabrication chemical doping 

      Paulillo, Bruno; Bareza, Nestor Jr; Pruneri, Valerio (IOP, 2021-05-07)
      Article
      Open Access
      Engineering the doping level in graphene nanostructures to yield controlled and intense localized surface plasmon resonance (LSPR) is fundamental for their practical use in applications such as molecular sensing for point ...

    • CVD graphene-FET based cascode circuits: a design exploration and fabrication towards intrinsic gain enhancement 

      Iannazzo Soteras, Mario Enrique; Alarcón Cot, Eduardo José; Pandey, Himadri; Passi, V.; Lemme, M. C. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      This paper presents the design exploration of a basic cascode circuit (CAS) targeted to increase the intrinsic gain A# of a graphene field-effect-transistor (GFET) by decreasing its output conductance go. First, the ...

    • Device Nanofabrication and Quantum Electronic Transport in Twisted van der Waals Heterostructures 

      Rubies Bigordà, Oriol (Universitat Politècnica de Catalunya, 2019-05-30)
      Bachelor thesis
      Open Access
      Covenantee:   Massachusetts Institute of Technology
      In this project I will learn how to fabricate twisted van der Waals heterostructures using mechanical exfoliation and pick up & transfer methods. I will also learn how to perform device nanofabrication using modern electron ...